The movement toward quality assurance (QA) reviews represents the next advance in the field of polygraphy. This National Polygraph Consultants (NPC) Guide will help polygraph practitioners conduct QA reviews of their own work, and the work of peers.

The Empirical Scoring System can be applied to any CQT format with DLCs or PLCs,
including Federal ZCT, You-Phase, USAF MGQT 1
& 2, Utah ZCT, Utah MGQT, and DLST - two to four
relevant questions - three to five presentations of each
question.

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